Bag loose-end tie down

Tips are always appreciated!

In the army we used to hold the straps down with black insulation tape, but now I don't really want to get my bag straps sticky anymore.

At first, I used the rubber bands that came with my bag but I found that gradually one of the bag straps would get longer than the other. It got annoying having to readjust my bag every week or so, so I decided to take advantage of some TPU filament I acquired to make this.

The internal diameter is 13mm x 21mm. Printed in TPU (clear), 215 deg, 0.4mm nozzle, 100% infill, 40mm/s, 80deg glass HBP with blue painter's tape. I find that 1 layer thickness of TPU makes it super strechy, 2 layers makes it harder, 3 layers makes it quite a bit more rigid. This has 3 total shells if I am not wrong. (EDIT: On second thought I can't remember anything about this setting, I made this a month back and my printer has been down for a while, either I'm right about this or I'm just throwing random figures that I rememeber to be tru